As of 4/25/22 Sophio has transitioned its invoice processing to Stripe. You may continue to pay by any major credit card. To get started login to your Sophio FBS account by clicking here. Then click the 'payment info' link from the account functions section. You will be redirected to Stripe where you can then click 'add payment method' to leave a cc on file.
Please click here to see a short tutorial.
If you have any questions please contact Support.